Four or the species of finch observed by Darwin on the Galapagos Islands showing variation of beakThe study of the flora of the Islands contributed...
{"Image ImageDescription": "Four or the species of finch observed by Darwin on the Galapagos Islands, showing variation of beak.The study of the flora of the Islands contributed to Darwin's theory of evolution. (Colorised black and white print). Artist Unknown.. (Photo by The Print Collector/Getty Images)", "Image Copyright": "The Print Collector"}